降身于夜晚，引得警察手忙脚乱，背着翅膀，这不是怪盗基德，这是怪盗Dark（置鲇龙太郎 配音）。沉睡了40年的Dark在高中生丹羽大助（入野自由 配音）14岁生日当天借由大助暗恋的女生原田梨纱（浅野真澄 配音）的照片苏醒。这在丹羽家是世代守护的秘密。于是，平凡的大助有了二重身份，晚上是窃取艺术品的怪盗，白天是高中生，而Dark的灵魂则寄居在大助的体内。 身手灵敏的大助引起了同班同学日渡怜（石田彰 配音）的注意和怀疑，总是时不时的找大助麻烦。而大助暗恋的梨纱却对Dark一见钟情。梨纱的双胞胎姐姐梨红（中山真奈美 配音）却因为一次意外引起了Dark的注意，进而引起了大助的好感。扑朔迷离的感情走向和危险的临近逐渐把故事推向高潮……
Plot Summary:Not-so-average teenager, Daisuke Niwa, has had an abnormal life. His mother and grandfather have trained him his whole life by setting up traps that can kill him if he doesn't figure them out. On his fourteenth birthday, he discovers why. When any male in the Niwa family turns fourteen, Dark also gets access to their bodies. Dark is a master thief who always leaves notices before he steals items. He's been around for ages and every male must help keep up Dark's reputation. Although dark can take over Daisuke's body, and talk to him in conscience, they are not the same person. Daisuke turns into Dark by from sudden feelings of love, usually brought on by a picture of his crush, Risa Harada. The only way Daisuke can be his normal self (Darkless), is to have the Holy Maiden. This maiden being a girl, and they must love eachother. The problem is, Risa has no feeling for Daisuke, and immediately after seeing Dark for the first time, falls for Dark instead. Daisuke's schoolmate, Satoshi ...
